Math & science

Calculate the greatest common divisor (GCD) of multiple numbers.

Calculate the least common multiple (LCM) of multiple numbers.

Calculate percentage of a number.

Calculate monthly mortgage payments, total payment, and total interest.

Calculate your new salary after a pay rise. Supports both percentage and fixed amount increases.

Calculate loan amortization schedule with Euribor-based variable interest rates and detailed payment breakdowns.

Calculate laptop depreciation schedule based on usage patterns with monthly breakdowns and salvage value estimates.

Convert between annual salary and hourly wage, with breakdown of monthly, weekly, and daily rates.

Calculate net salary, gross salary, and employer costs in Estonia with detailed tax breakdown for 2025

Calculate Estonian salary for 2026 with the new flat tax-free allowance (€700/month). Tax hump abolished - same allowance for all income levels.

Calculate the cost per night for hotel stays based on total cost and number of nights or check-in/check-out dates.

Calculate VAT (Value Added Tax) - add or remove VAT from amounts.

Calculate annual income from hourly, daily, weekly, or monthly rates. Convert between different pay periods.

Calculate discounts, final prices, and savings with percentage or fixed amount discounts.

Calculate profit margin, markup percentage, and pricing from cost and revenue.

Calculate Stripe payment processing fees for different fee structures and transaction amounts.

Calculate how much money you spend on cigarettes per day, week, month, year, and over time

Calculate how much money you spend on vaping (e-cigarettes) including e-liquid and device costs per day, week, month, year, and over time

Calculate DPI/PPI and pixel pitch for screens and displays based on resolution and size.

Calculate Earth's curvature, horizon distance, and hidden height over any distance.

Calculate great-circle distances between two coordinates using latitude and longitude.

Convert light years to kilometers, miles, astronomical units, and parsecs with precise astronomical calculations.

Calculate the area of common 2D shapes with step-by-step formulas.

Calculate the amount of grass seed needed for your lawn based on area size and grass type.